5272道题目5525 条题源记录 · 相同内容已合并
一元一次方程与代数求值进阶
13x = 42 - x
What value of x is the solution to the given equation?
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一元一次方程与代数求值挑战
If 2x = 10, what is the value of 4x ?
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一元一次方程与代数求值进阶
If \( \frac{x-4}{5}=\frac{x-4}{7} \) , the value of x - 4 is between which of the following pairs of values?
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一元一次方程与代数求值挑战
PC = N(21-C)
The given equation relates the variables P, N, and C. Which expression represents the value of C for distinct positive values of P and N?
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一元一次方程与代数求值挑战
If 2x = 8, what is the value of 10x?
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一元一次方程与代数求值挑战
The equation 7p +7w = 560 represents the number of purple tiles, p, and the number of white tiles, w, a designer needs to cover a 560- square-inch section of a wall. The designer needs 35 purple tiles for the wall. How many white tiles does she need?
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一元一次方程与代数求值进阶
If 4x = 7, what is the value of 24x?
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一元一次方程与代数求值进阶
4x - 3y = - 24
For the given equation, which table gives three values of x and their corresponding values of y ?
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一元一次方程与代数求值挑战
If \( \frac{x}{y}=3 \) and \( \frac{2x}{ty}=18 \) , what is the value of t ?
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一元一次方程与代数求值挑战
\( ak=\frac{b}{12}\left(8+m\right) \)
The given equation relates the positive variables a, b, k, and m. Which equation correctly expresses m in terms of a, b, and k?
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一元一次方程与代数求值进阶
\( PC=N\left(18-C\right) \)
The given equation relates the variables P, N, and C. Which expression represents the value of C for distinct positive values of P and N?
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一元一次方程与代数求值进阶
If \( 3x^{2}−6x−30=0 \), what is the value of \( x^{2}−2x \)?
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